Combined intake manifold and fuel preheater



Sept. 4, 1923; 1,466,921

F. E. ANDERSON COMBINED INTAKE MANIFOLD AND FUEL PREHEATER Filed Sept. 27, 1921 cated by the line 3-3 FRED E. ANDERSON, OF OSAGE CITY, KANSAS, ASSIGNOR TO DAVID S. ERICKSON, OF

OSAGE CITY, KANSAS.

COMBINED INTAKE MANIFOLD AND FUEL PREHEATER.

Application filed September 27, 1921.

To all whom it may concern.

Be it known that I, FRED E. ANDERSON, a citizen of the United States, residing at Osage City, in the county of Osage and State of Kansas, have invented certain new and useful Improvements in Combined Intake Manifolds and Fuel Preheaters; and I do declare the following to be a-full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

This invention relates to means for preheating the fuel charge to be introduced into the combustion chamber of an internal combustion engine, and one of the objects of the invention is to take advantage of the heat in the coolin water circulated through the cooling jackets about the engine'cylinders.

In the physical embodiment of my invention selected for illustration I have shown the invention as adapted to be used with an intake manifold, the mechanical embodiment preferably constituting part of the manifold so that the invention may be applied to existing types of motors by substituting a manifold embodying my invention for the conventional manifold generally used. I

The generic rinciples as well as the specific details 0 the invention selected for illustration will be apparent by reference to the following description in connection with the accompanyingdrawings, in which- Fig. 1 is a side elevational view of an engine to which my invention is applied.

Fig. 2 is a detail perspective view of a manifold embodying my invention and detached from the engine.

ig. 3 is a sectional view in a of Fig. 2. view on the line 44 plane indi 1g. 44s a sectional Of 3. \\'\\N Fig. 5 is a sectional of Fig. 3, and

ig. 6 is a sectional of Fig. 3.

The manifold may view on the line 55 view on the line 6-6 be constructed in the form of a Y, comprising the intake leg 1 and the discharge legs 2 and 3, which are connected by suitable portsto the intake openings of the combustion chambers of the engine. The manifold ports comprising the drum of a.

Serial No. 503,693.

ered relation, as clearly seen in Fig.

the engine. The wall 6 of the side and the wall 7 the other side. The wall water space9 and an outlet 13 at th spectively of the box ltfformed by the walls The inlet 12 is connected to the pipe 19 of the water circulating system leading from the radiator 20 through the medium of a branch pipe 21. hargeport 13 is connected to the radiator 20 through the mepipe 23, as clearly seen in Fig. 1, so that water may circulate from the system through the chamber 9 and back to the systern, supplying heated water at the temperature at which the water passesthrough the cooling jackets.

At right angles to the ports 12 and 13 are air inlet and exhaust ports 24 and 25 respectively. The inlet 24 is open to atmosphere and the outlet 25 is connected to a carburetor 26 through the medium of a conduit or pipe 27. The carburetor 26 is connected to the intake end 28 of the leg 1 of the manifold. The chamber 9 is provided with baflles or heat radiating fins 29, as clearl seen in Fig. 5, these being preferably in staggeredrelation, and similar fins 30 are passing thrdughthe chamber 9.

en the parts are assembled with the chamber 9 connected to the water circulating systemof the engine, water will pass through the chamber 9 in a continuous stream, in

duced by the circulating pump or otherwise, as will be clearly apparent. Atmospheric air will enter the. port 24. passing through the chamber 11 where it. will come into contact with the wall 8 and the fins or battles 30, absorbing heat and then passing through the conduit 27 to the carburetor '26, where the heated air will absorb the hydrocarbon from the carburetor in an etficient manner and from the carburetor pass into the leg 1 of the manifold, at this time being impregnated with the hydrocarbon content of the fuel mixture. As the fuel mixture passes through the leg 1 into the legs 2 and 3, it must traverse the chamber or space between the walls 6 and 7 where it will absorb additional heat from the fins 5 and the wall T constituting part of the enclosure for the space 9, through which the hot water passes. The combination at a relatively high temperature will then pass through the hollow legs 2 and 3 into the combustion chambers of the engine cylinders, efficiently preheated, with the known advantages of preheated fuel charges supplied to internal combustion engines.

It will be apparent that the device will efficiently perform the functions for which it is intended and that the combined manifold and temperature raising means may be constructed with the manifold legs of such proportions that the manifold may be readily substituted for the conventional types of manifolds without re-arranging any of the parts of the engine other than to tap in for the supply water to be circulated through the chamber orspace 9.

The device can be constructed as a single casting or the walls 8 and 10 may be formed separately and welded to the manifold. If welded, the device will be made into an integral unitary structure, it being also apparent that the parts may be separately formed in other ways and assembled it desired.

What I claim and Letters Patent is:

An intake manifold for internal combustion engines comprising a casing divided into an intermediate heat chamber and two outer chambers. one of which is a fuel cham-, her and the other an air chamber, an inlet port for the fuel chamber, and exhaust ports for said chamber, the intermediate chamber having ports at itstop and bottom and the air chamber having ports atits respective ends at right angles to the ports in the heat chamber, one air port communicating with atmosphere and the other having means for attachment to a carburetor, the inlet port for the fuel chamber having means for attachment to the discharge end of the carburetor.

In testimony whereof I afiix my signature.

FRED E. ANDERSON.

desire to secure by 

